Multimedia in Computers
Multimedia is nothing new. The nature of human communication has always involved "multimedia". We hear, speak, write, draw, make gestures, play music, and act out our thoughts and feelings to one another. We have enjoyed multimedia presentations since our childhood through film, television, and, more recently, videotape, videodisc and digital videodisc. These have all involved analog media. What makes recent developments in multimedia new and exciting is that we can now deal with these various media in a digital format.The digital format allows manipulation, sharing, and merging of data in ways that analog cannot. For example, writers can incorporate digital images into a word processing document. They can record and edit sounds to link with images or text, permitting the data types to serve multiple purposes with a minimum of reworking. Users can program the computer to seek files randomly, to store these different files digitally, just as any computer file. They can edit this information, eliminating unnecessary parts, transforming them, or adding alternative data or special effects - all without expensive postproduction.Multimedia evokes different images depending on the l
0 with multimedia extensions or equivalent APIs. The MPC specification outlines the minimum requirements for creating and using multimedia on the PC. 1 Mixed ModeSome people understand "multimedia" to mean the use of two or more types of media in the same product. The detailed specifications follow. At least one IBM AT-compatible parallel port. Apple's extension to the Mac's operating system, called QuickTime, allows software developers to integrate audio and video data types with standard applications (Utilizing Multimedia 1996, p. Philips and Dupont Optical Company (PDO) refer to this as "mixed mode". For example, digital images require much more storage space than text. One type of medium may play in a "static" mode at the same time as another might play in "dynamic" mode, such as an image displayed on the screen accompanied by audio (music and/or narration) or text accompanied by graphics and audio (Welcome to Multimedia 1992, p. 05kHz sampling rate, DMA/FIFO with interrupt;· 8-bit digital to analog converter (DAC), linear PCM sampling, 11.
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